Essays about: "Humic substances"
Showing result 1 - 5 of 14 essays containing the words Humic substances.
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1. Coupling between iron and humic substances in a land-sea transitional zone in the northern Baltic Sea
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : In marine ecosystems around the world, iron (Fe) is a well-studied and important trace element which has been found to stimulate phytoplankton and cyanobacteria growth, as well as limit nitrogen fixation and being essential for Legionella pneumophila which is known as the main cause of Legionnaires’ disease. Fe also contributes to the brownification of freshwater and has recently been documented to increase in concentration in rivers in Sweden. READ MORE
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2. The potential use of black soldier fly larvae residue as a fertilizer
University essay from SLU/Dept. of Agricultural Biosystems and TechologyAbstract : In sub-Saharan Africa (SSA), the primary constraint of agriculture productivity has consistently been ascribed to soil fertility. A common approach to improve soil fertility is the use of fertilizers, both organic and inorganic. Though recently interest is increasing in the use of newer alternatives like biostimulants. READ MORE
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3. Patterns and factors affecting brownification in a boreal river
University essay from Lunds universitet/Avdelningen för Teknisk vattenresursläraAbstract : During the last decades a brownification of the lakes and streams in the northern hemisphere has been observed. The change has been attributed to an increase of organic content in the water, leached from the top soil layers, called humic substances. READ MORE
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4. Optimisation of a small-scale ultrafiltration system for separation of humic substances from surface water
University essay from KTH/KemiteknikAbstract : Norrvatten är den fjärde största dricksvattenproducenten i Sverige. De producerar och distribuerar dricksvatten till 14 kommuner norr om Stockholm. Norrvatten har under en tid studerat alternativa processer för att optimera och öka produktionskapaciteten och effektiviteten i deras dricksvattenreningsverk vid Görvälnverket. READ MORE
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5. Photo-chemical reactivity of dissolved organic carbon in subarctic lakes from northern Sweden
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Dissolved organic matter (DOM) is the major absorber of sunlight in most natural waters and a critical component of the carbon cycle in aquatic systems. The photochemical decomposition of DOM can have a significant impact on the landscape-atmosphere carbon exchange. READ MORE